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Old 03-13-2004, 12:18 PM   #1
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Default 1998 SSEI No boost

I have 1998 SSEI and the boost gauge will not go above zero ever, it used to. I replaced the supercharger bypass solenoid and no change have checked for codes no codes were found and the car runs fine. When the car is started I can see the supercharger actuator pull closed and the bypass solenoid is energized and closes also. Could my PCM be confused is there a way to reset it, or would you recomend going to dealer and have it reflashed? Just guessing from what I have read, any help would be apreciated.
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Old 03-13-2004, 01:10 PM   #2
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Old 03-14-2004, 05:01 AM   #3
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Default No Codes

If it was a bad map sensor don't you think it would give a code
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Old 03-14-2004, 12:49 PM   #4
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Default Re: No Codes

Quote:
Originally Posted by fdgmaker
If it was a bad map sensor don't you think it would give a code
Only if it were dead, a false reading would not set a code.
DTC P0107 Manifold Absolute Pressure (MAP) Sensor Circuit Low Voltage
DTC P0108 Manifold Absolute Pressure (MAP) Sensor Circuit High Voltage
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Old 03-14-2004, 03:29 PM   #5
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Default

Your problem may be the same as mine was. If so here is your answer.
This vacuum line 'T' had popped off the nipple coming out of the lower intake. Only takes about 1 second to fix. Just slip it back on an -WHALLA!!
Good luck.
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Old 03-24-2004, 05:33 PM   #6
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Default Problem Solved

Thanks to the guys who helped on this one. The problem turned out to be a sticky arm that the actuator connects too not allowing the boost door to open, a little penetrating oil and away it went lots of boost again before never went above zero. Thanks again.
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Old 03-24-2004, 05:39 PM   #7
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Glad we could help and that you got your boost back
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Old 03-24-2004, 08:05 PM   #8
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Just a question... now that you are boosting... what is your gauge going upto on the + side?

The 1/4 mark... 1/2 mark... 3/4 or full?
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Old 03-24-2004, 08:16 PM   #9
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Jason

Stock is 7 PSI tops...3/4 of the way I guess
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Old 03-24-2004, 08:20 PM   #10
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Quote:
Originally Posted by Jim W
Jason

Stock is 7 PSI tops...3/4 of the way I guess
when mine use to work.. it went way higher then that.. 7/8 of the way.. don't know what PSI that is.. it'* in Kpa
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